Accident Summary
A pilot attempted an NDB approach to Runway 18 but executed a missed approach when the runway was not visible at 800 feet. During the missed approach, the pilot pitched the aircraft to a climb attitude and added full throttle. While in a left turn, the aircraft felt 'strange and mushy.' The pilot rolled the wings level and noticed the airspeed dropped from 100 mph to 80 mph.
Investigation Findings
A post-crash examination of the aircraft revealed no evidence of a mechanical malfunction or failure of the aircraft structure, flight controls, or engine.
Environmental Conditions
The temperature and dew point were 60°F and 59°F, respectively. According to icing probability charts, serious carburetor icing could occur at cruise or glide power settings.
Additional Information
The pilot stated that he never operated the carburetor heat control during the approach.